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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 I93CDjenZEN7gCShXF7P8JRaiIy7M8DBtojCIMiV+qoKuidnyqDYJgqulP2q650A
 QHgBM9M3HrhhUgJOf5JZhg==

<SEC-DOCUMENT>0001123548-08-000002.txt : 20080501
<SEC-HEADER>0001123548-08-000002.hdr.sgml : 20080501
<ACCEPTANCE-DATETIME>20080501161910
ACCESSION NUMBER:		0001123548-08-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080430
FILED AS OF DATE:		20080501
DATE AS OF CHANGE:		20080501

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENSCO INTERNATIONAL INC
		CENTRAL INDEX KEY:			0000314808
		STANDARD INDUSTRIAL CLASSIFICATION:	DRILLING OIL & GAS WELLS [1381]
		IRS NUMBER:				760232579
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		500 NORTH AKARD STREET
		STREET 2:		SUITE 4300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201-3331
		BUSINESS PHONE:		2143973000

	MAIL ADDRESS:	
		STREET 1:		500 NORTH AKARD STREET
		STREET 2:		SUITE 4300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201-3331

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ENERGY SERVICE COMPANY INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLOCKER ENERGY CORP
		DATE OF NAME CHANGE:	19871015

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOOMJIAN CARY A JR
		CENTRAL INDEX KEY:			0001123548

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08097
		FILM NUMBER:		08794999

	BUSINESS ADDRESS:	
		STREET 1:		ENSCO INTERNATIONAL INC
		STREET 2:		500 N AKARD ST SUITE 4300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201-3331
		BUSINESS PHONE:		2143973021

	MAIL ADDRESS:	
		STREET 1:		C/O ENSCO INTERNATIONAL INCORPORATED
		STREET 2:		500 N. AKARD, SUITE 4300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-04-30</periodOfReport>

    <issuer>
        <issuerCik>0000314808</issuerCik>
        <issuerName>ENSCO INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>ESV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001123548</rptOwnerCik>
            <rptOwnerName>MOOMJIAN CARY A JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 N. AKARD STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 4300</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201-3331</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President and Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-04-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>265</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>63.875</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27867</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Cary A. Moomjian, Jr.</signatureName>
        <signatureDate>2008-05-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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